trying https://github.com/hensm/fx_cast/releases/download/v0.3.1/fx_cast-0.3.1.xpi
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed

  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0

  0      0   0      0   0      0      0      0                              0
100 220.7k 100 220.7k   0      0 748.7k      0                              0
100 220.7k 100 220.7k   0      0 748.6k      0                              0
100 220.7k 100 220.7k   0      0 748.5k      0                              0